This paper represents an attempt to highlight the paradoxes of mindfulness practice. Because mindfulness is a subtle form of awareness that does not stem from rational cognitive thought, its practice often involves embracing contradictions in a way that transcends logic. We first define mindfulness as involving three core aspects: intention, attention, and attitude. We then highlight four paradoxes of mindfulness that we believe to be especially salient for the field: (1) Acceptance vs. Change, (2) Escape vs. Engagement, (3) Effort vs. Non-Striving, (4) Self-Focus vs. Non-Self. Finally, we discuss the importance of ongoing dialog about these paradoxes both for practitioners and for those teaching mindfulness in clinical contexts.